Jasper, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 50 °F (low) to 74.2 °F (high). Annual precipitation averages 61.3 Inches. Jasper is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 31.7 °F | 53.7 °F | 5.84 in. |
| February | 34.5 °F | 58.1 °F | 5.5 in. |
| March | 41.1 °F | 66.5 °F | 5.98 in. |
| April | 48.0 °F | 75.0 °F | 5.68 in. |
| May | 57.4 °F | 82.1 °F | 5.09 in. |
| June | 65.6 °F | 88.3 °F | 5.08 in. |
| July | 69.3 °F | 91.1 °F | 5.3 in. |
| August | 68.2 °F | 91.2 °F | 4.05 in. |
| September | 62.1 °F | 86.5 °F | 4.44 in. |
| October | 49.5 °F | 76.3 °F | 3.78 in. |
| November | 38.6 °F | 64.8 °F | 4.69 in. |
| December | 34.2 °F | 56.2 °F | 5.83 in. |
| Annual | 50 °F | 74.2 °F | 61.26 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |